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Hello everyone,
I have a scene and want to highlight some objects when the mouse is over them. So I took the simple "picking demo" from the xith.org page and modified it in that way, that I changed the mousePressed() method to a mouseMoved() method. But running that demo and moving the mouse over the window made the complete application hang after a short time. There is no exeption or anything else that could help me to determine where the failure comes from.
So I need some help. Please try my code and to tell me weather the application hangs too on your machine or not. I am thankful for any suggestions that could help me to solve that problem.
Thanks a lot
Marc
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import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionAdapter;
import java.util.BitSet;
import javax.vecmath.Color3f;
import javax.vecmath.Point3f;
import javax.vecmath.Vector3f;
import com.xith3d.picking.PickRenderResult;
import com.xith3d.render.CanvasPeer;
import com.xith3d.render.RenderPeer;
import com.xith3d.render.jogl.RenderPeerImpl;
import com.xith3d.scenegraph.Appearance;
import com.xith3d.scenegraph.BranchGroup;
import com.xith3d.scenegraph.Canvas3D;
import com.xith3d.scenegraph.Geometry;
import com.xith3d.scenegraph.GeometryArray;
import com.xith3d.scenegraph.Locale;
import com.xith3d.scenegraph.Node;
import com.xith3d.scenegraph.QuadArray;
import com.xith3d.scenegraph.Shape3D;
import com.xith3d.scenegraph.Switch;
import com.xith3d.scenegraph.View;
import com.xith3d.scenegraph.VirtualUniverse;
public class Picking
{
private boolean mouseClicked;
private int xPos;
private int yPos;
private int counter = 0;
private Switch sw;
private BitSet displayedPlanes = new BitSet(3);
public Integer pickParamsMutex = new Integer(0);
public static void main(String[] args)
{
new Picking();
}
public Picking()
{
VirtualUniverse universe = new VirtualUniverse();
View view = new View();
universe.addView(view);
Locale locale = new Locale();
universe.addLocale(locale);
BranchGroup scene = new BranchGroup();
locale.addBranchGraph(scene);
scene.setPickable(true);
displayedPlanes.set(0, 3);
sw = new Switch(Switch.CHILD_MASK, displayedPlanes);
sw.setPickable(true);
scene.addChild(sw);
Geometry geo1 = createColouredPlane(-.5f, 0, .2f, .5f, .5f, 0, 1, 0);
Shape3D sh1 = new Shape3D(geo1, new Appearance());
sh1.setPickable(true);
sh1.setName("left plane");
sw.addChild(sh1);
Geometry geo2 = createColouredPlane(0, 0, 0, 1, 1, 1, 0, 0);
Shape3D sh2 = new Shape3D(geo2, new Appearance());
sh2.setPickable(true);
sh2.setName("middle plane");
sw.addChild(sh2);
Geometry geo3 = createColouredPlane(.5f, 0, .2f, .5f, .5f, 0, 0, 1);
Shape3D sh3 = new Shape3D(geo3, new Appearance());
sh3.setPickable(true);
sh3.setName("right plane");
sw.addChild(sh3);
RenderPeer rp = new RenderPeerImpl();
CanvasPeer cp = rp.makeCanvas(null, 640, 480, 32, false);
Canvas3D canvas = new Canvas3D();
canvas.set3DPeer(cp);
cp.getComponent().addMouseMotionListener(new MouseMotionAdapter()
{
public void mouseMoved(MouseEvent e)
{
synchronized (pickParamsMutex)
{
xPos = e.getX();
yPos = e.getY();
mouseClicked = true;
counter++;
System.out.println(counter);
}
}
});
view.addCanvas3D(canvas);
view.getTransform().lookAt(new Vector3f( 0, 0, 1.5f), // location of eye
new Vector3f( 0, 0, 0), // center of view
new Vector3f( 0, 1, 0)); // vector pointing up
while(true)
{
view.renderOnce();
synchronized (pickParamsMutex)
{
if(mouseClicked)
{
PickRenderResult[] results = view.pick(canvas, xPos, yPos, 1, 1);
if(results != null)
{
displayedPlanes.set(0, 3);
for(int i=0; i<results.length; i++)
{
Node node = results.getNodes()[0];
String nodeName = node.getName();
if(nodeName.equals("left plane"))
displayedPlanes.clear(0);
else if(nodeName.equals("middle plane"))
displayedPlanes.clear(1);
else if(nodeName.equals("right plane"))
displayedPlanes.clear(2);
}
}
mouseClicked = false;
}
}
}
}
private Geometry createColouredPlane(float xPos,
float yPos,
float zPos,
float xSize,
float ySize,
float redValue,
float greenValue,
float blueValue)
{
float xHalf = xSize/2f;
float yHalf = ySize/2f;
Point3f[] coords = new Point3f[]
{
new Point3f(xPos+xHalf, yPos-yHalf, zPos),
new Point3f(xPos+xHalf, yPos+yHalf, zPos),
new Point3f(xPos-xHalf, yPos+yHalf, zPos),
new Point3f(xPos-xHalf, yPos-yHalf, zPos),
};
Color3f[] colors = new Color3f[]
{
new Color3f(redValue, greenValue, blueValue),
new Color3f(redValue, greenValue, blueValue),
new Color3f(redValue, greenValue, blueValue),
new Color3f(redValue, greenValue, blueValue)
};
QuadArray g = new QuadArray(coords.length, GeometryArray.COORDINATES
| GeometryArray.COLOR_3);
g.setCoordinates(0,coords);
g.setColors(0,colors);
return g;
}
}
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